Heat of Reaction - enthalpy question

Calculate the heat of reaction at the standard reference state for the following reactions: 2CaO(s) + 2MgO(s) + 4H2O(l) ----> 2Ca(OH)2(s) + 2Mg(OH)2(s) NaCl(s) + 2SO2(g) + 2H2O(l) + O2(g) ----> 2Na2SO4(s) + 4HCl(g) n-C4H10(g) ----> C2H4(g) + C2H6(g)

Fluid mechanics -- Bernoulli equation pump problem

Water at 20 degrees Celsius is pumped at a constant rate of 9m3/h from a large reservoir resting on the floor to the open top of an experimental absorption tower. The point of discharge is 5 m above the floor, and friction losses in the 50-mm pipe from the reservoir to the tower amount to 2.5 J/kg. At what height in the reservoir must the water level be kept if the pump can deliver only 0.1 kW?

Chemicals for indoor concrete flooring

I need some information on the following: - indoor concrete maintenance chemicals used on indoor concrete flooring - high solids floor finish chemicals used on indoor concrete flooring I researched these topics briefly, but I would like to have a layman's description on each of these two chemical market segments. 2 paragraphs on each of the above should be sufficient.

Chemicals for indoor concrete flooring

Explanations on (1). indoor concrete maintenance chemicals used on indoor concrete flooring (2). high solids floor finish chemicals used on indoor concrete flooring

Chemicals for indoor concrete flooring

Descriptions of: indoor concrete maintenance chemicals used on indoor concrete flooring - high solids floor finish chemicals used on indoor concrete flooring. What is layman's description on each of these two chemical market segments?